NACHA?The Electronic Payments Association is a not-for-profit association that oversees the Automated Clearing House (ACH) Network, one of the largest electronic payment networks in the world. More than 18 billion ACH payments were exchanged in 2007. NACHA is responsible for the administration, development, and enforcement of the NACHA Operating Rules and sound risk management practices for the ACH Network. Through its industry councils and forums, NACHA brings together hundreds of diverse payments system stakeholder organizations to enable the development of new network services and applications.